A more thorough explanation:

Documentum is a Latin term that was used in Roman law. It has two meanings:

1. Proof
2. A document

For example, if someone is accused of a crime, they may need to provide documentum to prove their innocence. This could be in the form of a witness statement or a piece of physical evidence.

Alternatively, documentum can refer to a physical document, such as a contract or a will. These documents can be used as proof of ownership or to establish legal rights.